
<template>
  <div>
    这是父组件model----父组件---{{ num }}

    <Son v-model="num" />

  </div>
</template>

<script>
import Son from './Son.vue'
export default {
  components: {
    Son
  },
  data() {
    return {
      num: 100
    }
  },
  methods: {

  }
}
</script>
